243034243253 has 2 divisors, whose sum is σ = 243034243254. Its totient is φ = 243034243252.

The previous prime is 243034243247. The next prime is 243034243271. The reversal of 243034243253 is 352342430342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198824134609 + 44210108644 = 445897^2 + 210262^2 .

It is a cyclic number.

It is not a de Polignac number, because 243034243253 - 2⁴ = 243034243237 is a prime.

It is a super-3 number, since 3×243034243253³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243034243453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121517121626 + 121517121627.

It is an arithmetic number, because the mean of its divisors is an integer number (121517121627).

Almost surely, 2^243034243253 is an apocalyptic number.

It is an amenable number.

243034243253 is a deficient number, since it is larger than the sum of its proper divisors (1).

243034243253 is an equidigital number, since it uses as much as digits as its factorization.

243034243253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 35.

Adding to 243034243253 its reverse (352342430342), we get a palindrome (595376673595).

The spelling of 243034243253 in words is "two hundred forty-three billion, thirty-four million, two hundred forty-three thousand, two hundred fifty-three".